Micro-Cide™ 28 HLD

Micro-Cide™ 28 HLD & Micro-MEC™ 1.8%

3% Glutaraldehyde Reusable Sterilizing and High-Level Disinfectant Solution & Glutaraldehyde Monitor Strips


Micro-Cide™ 28 HLD is a 3% glutaraldehyde solution with attached powder activator. Once activated, Micro-Cide™ 28 HLD can be used for 28 days to provide high level disinfection or sterilization, providing the solution is above the 1.8% minimum effective concentration and is used according to directions for use.
• Provides a way to effectively sterilize or achieve high level disinfection of heat sensitive reusable medical devices.
• Achieves high level disinfection of instruments in 25 minutes providing
directions for use are followed.
• Sterilizes instruments in 10 hours providing directions for use are followed.


Micro-Cide™ 28 HLD is a virtually surfactant-free, free rinsing  activated  glutaraldehyde  liquid chemical sterilant  and high-level disinfectant. Its active ingredient is glutaraldehyde in a nominal concentration of 3%. When the powdered activator is added, the solution turns green in color to indicate its readiness for use. In addition to the active ingredient, this ready-to-use solution contains buffers, wetting agents, a rust and corrosion inhibitor and a pleasant fragrance.


Micro-Cide™ 28 HLD produces high-level disinfection  at room temperature in as little time as 25 minutes and complete sterilization in 10 hours at room temperature.

Representative microorganisms tested include:

Bacterial Spores

  • Bacillus subtillus
  • Clostridium sporogenes

Vegetative Bacteria

  • Staphylococcus aureus
  • Salmonella cholerasuis
  • Pseudomonas aeruginosa


  • Mycobacterium tuberculosis (var:BCG bovis)
  • Mycobacterium tuberculosis (smegmatis)


  • Herpes simplex virus Type I
  • Poliovirus Type I
  • HIV-1 (Associated with AIDS)


  • Trichophyton mentagrophytes
  • Aspergillis Niger


Reprocessing flexible fiber endoscopes in-use studies supports  the effectiveness of Micro-Cide™ 28 HLD in actual use. (ASTM 1518-94 protocol).  In addition, a simulated use-test was conducted to support the contact condition for high-level disinfection of endoscopes at 25°C at 25 minutes.  The results demonstrate the effectiveness of Micro-Cide™ 28 HLD to kill M.Terrae dried on flexible fiber endoscopes.

(Studies were performed after 28 days of simulated re-use following prescribed AOAC testing  methods).

WARNING: This product can expose you to b-Myrcene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

SDS - Safety Data Sheets

Micro-Cide28 HLD

Micro-Cide28 Activator

Frequently Asked Questions

What test strips do you recommend to ensure the MEC is at necessary level for reuse?

Micro-Cide™ 28 HLD 3% Glutaraldehyde may be reused for a maximum of 28 days provided the minimum effective concentration of 1.8% Glutaraldehyde, time and temperature are maintained. Micro-MEC™ 1.8% Glutaraldehyde Monitor Strip* should be used before each use of Micro-Cide™ 28 HLD 3% Glutaraldehyde solution to determine the glutaraldehyde concentration is above the minimum effective concentration of 1.8%.
Do not use beyond 28 days even if the concentration of Glutaraldehyde is above the minimum effective concentration (1.8%) as indicated by the Micro-MEC™ 1.8% Glutaraldehyde Monitor Strip*. See the Package Insert for additional instructions and information regarding the reuse of Micro-Cide™ 28 HLD 3% Glutaraldehyde.

*Micro-MEC™ is a trademark of Micro-Scientific, LLC. The Micro-MEC™ 1.8% Glutaraldehyde Monitor Strip has been verified for use with Micro-Cide™ 28 HLD 3% Glutaraldehyde solution and provides a “margin of safety” above the Minimum Effective Concentration of 1.8%.


Ordering Information

128 oz./1 Gallon Pour BottlesMC28-04-1284 Bottles per case
60 Test Strip BottleM600542 Bottles per case